[INFO] fetching crate u8bits 0.1.0...
[INFO] checking u8bits-0.1.0 against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] extracting crate u8bits 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate u8bits 0.1.0
[INFO] finished tweaking crates.io crate u8bits 0.1.0
[INFO] tweaked toml for crates.io crate u8bits 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate u8bits 0.1.0 on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 8 packages to highest compatible versions
[INFO] [stderr]       Adding paste v0.1.18 (available: v1.0.15)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85
[INFO] running `Command { std: "docker" "start" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking u8bits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling surjective-enum v0.1.0
[INFO] [stdout] error: useless conversion to the same type: `u16`
[INFO] [stdout]   --> tests/lib.rs:20:20
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let _x : u16 = 0u16.into();
[INFO] [stdout]    |                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 20 -     let _x : u16 = 0u16.into();
[INFO] [stdout] 20 +     let _x : u16 = 0u16;
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 20 -     let _x : u16 = 0u16.into();
[INFO] [stdout] 20 +     let _x : u16 = <u16 as Into<_>>::into(0u16);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `u8bits` (test "lib") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85", kill_on_drop: false }`
[INFO] [stdout] 4a45d7973af21c8f2860f36e72bb7e04cdb0613dd2c7e5efb9edcb29de0aad85
